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LS Vtec Oil Pressure Hole

 
LS Vtec Oil Pressure Hole
LS/VTEC Head Swap - Still The One
Castro previously sent the top end to Port Flow Design in Harbor City to be assembled but not ported. Anyone attempting such a swap should pick up a head complete with its valve cover, internals and VTEC solenoid assembly. The B16 intake manifold will also be useful, although Castro's opting for an aftermarket Blox Racing manifold for a little better induction. Blox flat-bottom valves also adorn the valvetrain, raising compression a bit.
To engage VTEC, the B16 head receives oil pressure from a hole in the top of the block. That hole is absent on our B18B1, which is why the LS/V requires rerouting oil pressure externally. Meanwhile, the existing hole in the head (arrow) is threaded and plugged. View Related Article
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